Don't get on Justin Bieber's Bad Side!

Who knew such a sweet looking guy could get so mean! Pop superstar Justin Bieber decided to take revenge on a guy who hacked into Justin's friend's Twitter account and stole Justin's private number from it. So this is what Justin did to get the guy back: on Saturday he posted a tweet saying: "Everyone call me or text" and gave a number, of course his 4.5 million followers on Twitter went mad with texts and calls after that, even thought the Tweet was removed minutes later. Only one problem though, the number was not actually Justin's, it was the bad boy hacker, Kevin Kristopik's private line!

Kevin is furious and made a Video showing his phone going off every second with calls and texts and he says he doesn't deserve this kind of treatment from Justin and we hear he is thinking of suing the star! Ouch this could get messy! (Source: Gawker